What You'll Need

Brew Time

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Background

Like surprise parties and camping trips, cold brew is a planner’s dream. With a bit of foresight and some basic instructions, the Filtron method is the most reliable and delicious way to achieve a single origin iced coffee at home. Set your stopwatch for a 12-hour countdown and you’ll be generously rewarded—a crystalline, concentrated brew, with plenty of zing, is your prize.

Step 1

Measure out 2,000 grams (two liters) of water.

Step 2

Place the Filtron’s rubber cap in the hole at the bottom of the device.

Step 3

Wet the wool filter and place it in the circular groove at the bottom of the Filtron. You’ll want to make sure this is in evenly; otherwise, the extraction may be subpar.

Step 4

Unfold your filter and place it in the Filtron. It will be a slightly loose fit. Secure it evenly and fold where necessary.